package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.common.CustomException;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.Setmeal;
import com.itheima.reggie.mapper.CategoryMapper;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishService;
import com.itheima.reggie.service.SetmealService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class CategoryServiceImpl extends ServiceImpl<CategoryMapper, Category> implements CategoryService {

    @Autowired
    private DishService dishService;
    @Autowired
    private SetmealService setmealService;

    @Override
    public void remove(Long id) {
        //先判断该分类下是否关联的有菜品
        int count;
        count = dishService.count(new LambdaQueryWrapper<Dish>().eq(Dish::getCategoryId, id));
        if (count > 0) {
            throw new CustomException("该分类下关联的有菜品，请先删除菜品信息");
        }
        count = setmealService.count(new LambdaQueryWrapper<Setmeal>().eq(Setmeal::getCategoryId, id));
        if (count > 0) {
            throw new CustomException("该分类下关联的有套餐，请先删除套餐信息");
        }

        //开始删除
        super.removeById(id);
    }
}
